Patents by Inventor Marcel De Wilde

Marcel De Wilde has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080149227
    Abstract: A method of oxygen-free heat treatment of a steel part in an atmospheric pressure furnace is disclosed. The present method employs an oxygen-free controlled gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies as a function of time, with the balance of the gas atmosphere being nitrogen. The presently disclosed oxygen-free heat treatment process, preferably a carburization process, uses a precisely controlled atmosphere to minimize inter-granular oxidation, eliminate the formation of soot and cementite or other metallic carbides, and avoid hydrogen embrittlement.
    Type: Application
    Filed: December 26, 2006
    Publication date: June 26, 2008
    Inventors: Karen Anne Connery, Robert Marcel De Wilde, Richard A. Novak, Simon Ho, Amitabh Gupta
  • Publication number: 20080149225
    Abstract: A method of oxygen-free heat treatment of a steel part in an atmospheric pressure furnace is disclosed. The present batch treatment process employs an oxygen-free controlled gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies as a function of time, with the balance of the gas atmosphere being nitrogen. The present continuous furnace treatment process employs a plurality of zones with each zone including an oxygen-free controlled gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent that varies across the different zones, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies across the different zones, with the balance of the gas atmosphere within each zone being nitrogen.
    Type: Application
    Filed: February 14, 2008
    Publication date: June 26, 2008
    Inventors: Karen Anne Connery, Richard A. Novak, Simon Ho, Amitabh Gupta, Robert Marcel De Wilde
  • Patent number: 7335128
    Abstract: A drive assembly for a wind turbine includes a rotor hub, a supporting structure, a planetary gear transmission unit having sun, planet and ring gears and a planet carrier. The ring gear is non-rotatably secured to the supporting structure. A main bearing rotatably supports the rotor hub and planet carrier relative to the ring gear and supporting structure. The drive assembly further includes two substantially independent force transmission paths for transmission of forces reacting with forces exerted by the wind turbine rotor hub. A first of the force transmission paths acts from the rotor hub via the main bearing to the supporting structure primarily for transmission of overhang load forces and bending moment forces and a second of the force transmission paths acts from the rotor hub via the planet carrier primarily for transmission of rotational forces.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: February 26, 2008
    Assignee: Hansen Transmission International NV
    Inventors: Peter Flamang, Marcel De Wilde, Roger Bogaert
  • Publication number: 20060205561
    Abstract: A drive assembly for a wind turbine includes a rotor hub, a supporting structure, a planetary gear transmission unit having sun, planet and ring gears and a planet carrier. The ring gear is non-rotatably secured to the supporting structure. A main bearing rotatably supports the rotor hub and planet carrier relative to the ring gear and supporting structure. The drive assembly further includes two substantially independent force transmission paths for transmission of forces reacting with forces exerted by the wind turbine rotor hub. A first of the force transmission paths acts from the rotor hub via the main bearing to the supporting structure primarily for transmission of overhang load forces and bending moment forces and a second of the force transmission paths acts from the rotor hub via the planet carrier primarily for transmission of rotational forces.
    Type: Application
    Filed: January 30, 2006
    Publication date: September 14, 2006
    Inventors: Peter Flamang, Marcel De Wilde, Roger Bogaert
  • Patent number: 7090465
    Abstract: A drive assembly for a wind turbine (10) comprises a rotor hub (14), supporting structure such as a turbine nacelle (15), a planetary type gear transmission unit comprising sun, planet (47, 48) and ring gears (49) and a planet carrier (41), said planet carrier comprising a planet bogie plate (43) which supports and locates circumferentially spaced gear bearings (45, 46), said bearings (45, 46) being able, in use, to self adjust in angular position relative to the plate (43) whereby the rotational axes of the bearings (45, 46) may be either perpendicular to the general plane of the bogie plate (43) or depart therefrom.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: August 15, 2006
    Assignee: Hansen Transmissions International NV
    Inventors: Peter Flamang, Marcel De Wilde, Warren Smook
  • Patent number: 7011598
    Abstract: A drive assembly for a wind turbine includes a rotor hub, a supporting structure, a planetary gear transmission unit having sun, planet and ring gears and a planet carrier. The ring gear is non-rotatably secured to the supporting structure. A main bearing rotatably supports the rotor hub and planet carrier relative to the ring gear and supporting structure. The drive assembly further includes two substantially independent force transmission paths for transmission of forces reacting with forces exerted by the wind turbine rotor hub. A first of the force transmission paths acts from the rotor hub via the main bearing to the supporting structure primarily for transmission of overhang load forces and bending moment forces and a second of the force transmission paths acts from the rotor hub via the planet carrier primarily for transmission of rotational forces.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: March 14, 2006
    Assignee: Hansen Transmissions International NV
    Inventors: Peter Flamang, Marcel De Wilde, Roger Bogaert
  • Publication number: 20040219020
    Abstract: A drive assembly for a wind turbine (10) comprises a rotor hub (14), supporting structure such as a turbine nacelle (15), a planetary type gear transmission unit comprising sun, planet (47, 48) and ring gears (49) and a planet carrier (41), said planet carrier comprising a planet bogie plate (43) which supports and locates circumferentially spaced gear bearings (45, 46), said bearings (45, 46) being able, in use, to self adjust in angular position relative to the plate (43) whereby the rotational axes of the bearings (45, 46) may be either perpendicular to the general plane of the bogie plate (43) or depart therefrom.
    Type: Application
    Filed: June 7, 2004
    Publication date: November 4, 2004
    Inventors: Peter Flamang, Marcel De Wilde, Warren Smook
  • Publication number: 20040038770
    Abstract: A drive assembly for a wind turbine comprises a rotor hub (14), supporting structure such as a turbine nacelle (15), a planetary type gear transmission unit (11) comprising sun (27), planet (25) and ring (24) gears and a planet carrier (28), said ring gear being non-rotatably secured to said supporting structure (15), a main bearing (23) which rotatably supports the rotor hub (14) and planet carrier (28) relative to said ring gear and supporting structure, and said drive assembly comprising two substantially independent force transmission paths for transmission of forces reacting with forces exerted by the wind turbine rotor hub, a first of said force transmission paths acting from the rotor hub (14) via said main bearing (23) to the supporting structure (15) primarily for transmission of overhang load forces and bending moment forces and a second of said force transmission paths acting front the rotor hub (14) via said planet carrier (28) primarily for transmission of rotational forces.
    Type: Application
    Filed: September 4, 2003
    Publication date: February 26, 2004
    Inventors: Peter Flamang, Marcel De Wilde, Roger Bogaert
  • Publication number: 20030123984
    Abstract: A gear unit for wind turbine assembly, the gear unit including a planet gear stage wherein a planet gear is rotatably supported on a planet carrier by two bearings axially spaced relative to the axis of rotation of the planet gear, at least one of the bearings being a tapered bearing.
    Type: Application
    Filed: November 13, 2002
    Publication date: July 3, 2003
    Inventors: Marcel De Wilde, Roger Bogaert, Rene Talboom
  • Patent number: 6270705
    Abstract: This invention is directed to a method and system for using laminar barrier inerting techniques to shroud a selected area in an open space covering the polymeric film outlet and/or raw material inlet with inert gas.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: August 7, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Robert Marcel De Wilde, Pascal Yves Duro